Synthesis and photocatalytic activity of ZnO/CuO composite for the degradation of methyl blue under vilsible light iradiation | Zendy

Nguyen Van Kim | Zendy; Nguyễn Thị Việt Nga | Zendy; Vo Thi Thanh Tuyen | Zendy; Vien Vo | Zendy

Open Access

Synthesis and photocatalytic activity of ZnO/CuO composite for the degradation of methyl blue under vilsible light iradiation

Author(s) -

Nguyen Van Kim,

Nguyễn Thị Việt Nga,

Vo Thi Thanh Tuyen,

Vien Vo

Publication year - 2020

Publication title -

vietnam journal of catalysis and adsorption

Language(s) - English

Resource type - Journals

ISSN - 0866-7411

DOI - 10.51316/jca.2020.056

Subject(s) - photocatalysis , composite number , methylene blue , materials science , visible spectrum , degradation (telecommunications) , diffuse reflectance infrared fourier transform , band gap , ultraviolet , scanning electron microscope , chemical engineering , photochemistry , catalysis , composite material , chemistry , optoelectronics , organic chemistry , telecommunications , computer science , engineering

Composite ZnO/CuO was prepared by direct formation of ZnO from Zn(OOCCH3)2 precursor in the presence of CuO with the assistant of the microwave system. The obtained composite was characterized by X-Ray Diffraction (XRD) and Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV-vis DRS), which shows that the composite with a bandgap of 3.27 eV contains two components, ZnO and CuO. The photocatalytic activity of ZnO/CuO was assessed by the degradation of methylene blue (MB) in water under visible light, shows that the photocatalytic activity for the ZnO/CuO composite was remarkably improved compared to single ZnO and CuO. This result is attributed to the reduced recombination rate of photogenerated electron-hole pairs by the presence of CuO in the composite, therefore photocatalysis activity increases.

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